1.9 tid 150 Throttle body

[Paddy]

Hi just a quick one can any body tell me if the valve inside the throttle body should be open as mine is had a look when changing the Egr valve as no power under 2000 rpm it's on my Saab 9-3 same engine as vauxhall but it still the same, I thought the valve should be closes when the engine is but please can someone let me know thanks guys all the best paddy

[GazVXLINE170]

The valve only closes on engine shut down m8. Known as a shut off plate or anti shudder plate. On CDTI's on the Vectra's/Signums around 2004-2005 there can be an issue with the throttle position sensor causing the valve to shut over - resulting in engine stalling. This is due to the solder joints in the throttle body housing cracking.

[Paddy]

The valve only closes on engine shut down m8. Known as a shut off plate or anti shudder plate. On CDTI's on the Vectra's/Signums around 2004-2005 there can be an issue with the throttle position sensor causing the valve to shut over - resulting in engine stalling. This is due to the solder joints in the throttle body housing cracking.

Hi thanks for the reply mine is open with engine on or off I have no power below 2000 rpm started ages weeks back but then I had a code for the egr valve so cleaned it & that sorted it but the problem came back a few days back but with no code so I bought a new valve & put it on but it's still the same, I have some softwere on my laptop & when I do a throttle vale test the car cuts out so I starting to think it's the throttle body what do you think thanks again Paddy

[GazVXLINE170]

Hi thanks for the reply mine is open with engine on or off I have no power below 2000 rpm started ages weeks back but then I had a code for the egr valve so cleaned it & that sorted it but the problem came back a few days back but with no code so I bought a new valve & put it on but it's still the same, I have some softwere on my laptop & when I do a throttle vale test the car cuts out so I starting to think it's the throttle body what do you think thanks again Paddy

As said have a look at the throttle body. The throttle plate should only close on shut down - it will always be open regardless if the engine is running or not. This is only applicable to diesels.

[Richard.roberts]

Ive read somewhere that the valve closes when you shut engine off but after a short while it resets to open ready for the next start but dont quote me on it

[blacksapphire]

If the engine has a lack of power under 2000rpm--like mine had--then you may want to read this http://www.vectra-c.com/forum/showthread.php?t=109454

Cheers Andy

[Paddy]

If the engine has a lack of power under 2000rpm--like mine had--then you may want to read this http://www.vectra-c.com/forum/showthread.php?t=109454

Cheers Andy

Hi thanks for that I did a forced DPF regen with the laptop as my dpf was at 80% but it still the same I know the swaril valves are working with no problem it's had a new egr & it's still dead ontill 2000 rpm then takes off like a rocket as your foot is stuck to the floor form the flat spot I will look at the hoses later i do not know what to try next thanks anyway & wish you luck with you problem let me know how you get on. Paddy

[blacksapphire]

Hi thanks for that I did a forced DPF regen with the laptop as my dpf was at 80% but it still the same I know the swaril valves are working with no problem it's had a new egr & it's still dead ontill 2000 rpm then takes off like a rocket as your foot is stuck to the floor form the flat spot I will look at the hoses later i do not know what to try next thanks anyway & wish you luck with you problem let me know how you get on. Paddy

Hi Paddy--its worth looking at as it made a big difference to my Cdti--- heres my posting on the thread. And what i used--cost all of £1.99 and i have a bit left over!

what a difference
I got a 1m length of this [ame="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130650178854"]http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=130650178854[/ame] ... arrived next day so well impressed. Cut to length and slipped on with no trouble---the old rubber pipes were starting to perish and harden.

Anyways the difference is amazing---the car pulls from 1200rpm now where it struggled before till reaching 2000rpm ---so it just pulls now. The judder has gone--felt as if it was stuggling and had no power under 2000rpm so was always dropping a gear to get it going again. Now its transformed.

Cheers Andy

[blacksapphire]

Any update on if it worked?